| 引用本文: | 邓小文,潘巧波,高庆水.永磁直驱机组叶轮质量不平衡故障建模及仿真研究[J].电力系统保护与控制,2018,46(4):35-40.[点击复制] |
| DENG Xiaowen,PAN Qiaobo,GAO Qingshui.Research on the modeling and simulation of permanent magnet direct-driven wind turbine rotor imbalance fault[J].Power System Protection and Control,2018,46(4):35-40[点击复制] |
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| 摘要: |
| 针对风力机叶轮质量不平衡故障对风电机组安全稳定运行的严重影响问题，在对该故障形成机理简要阐述后，理论推导了该故障对永磁同步发电机转速及电磁功率造成的影响。利用Matlab/Simulink建立在该故障状态下包含风力机、传动部件及发电机的风机模型，从定量角度设置不同的仿真算例，分析电机转速和电磁功率信号时域及频谱曲线特征及变化。分析结果显示其包含电机旋转的一倍频分量和二倍频分量，且随着不平衡质量的增大而增大。在湍流风速条件下，电机旋转及电磁功率频谱在低频段呈现连续尖峰。该方法可以应用到直驱风电机组故障诊断系统中质量不平衡故障的判别和不平衡质量的确定。 |
| 关键词: 风力机 永磁同步电机 质量不平衡 故障建模 故障诊断 |
| DOI：10.7667/PSPC170178 |
| 投稿时间：2017-02-13修订日期：2017-05-07 |
| 基金项目:国家科技支撑计划项目(2015BAA06B02) |
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| Research on the modeling and simulation of permanent magnet direct-driven wind turbine rotor imbalance fault |
| DENG Xiaowen,PAN Qiaobo,GAO Qingshui |
| (Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China;Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China;School of Automation Engineering, Northeast Electric Power University, Jilin 132012, China) |
| Abstract: |
| Aiming at the problem that the rotor mass imbalance has a strong impact on the safe and stable operation of the wind turbine generators, the impact of the fault on the motor speed and generator power is derived theoretically based on the description of the mechanism of the failure. Matlab/Simulink model which contains the wind turbine model, driven train model and the generator model under the fault state is established. Setting up different simulation examples from the quantitative point of view, signal feature and change curves of motor speed and generator power in both time domain and spectrum domain are analyzed accordingly. And the motor speed and generator power signal are obtained which have detected the 1st frequency and 2nd frequency of the rotor under the fault. With the imbalance increasing, the amplitude of 1st frequency and 2nd frequency is increased too. In the turbulent wind speed conditions, the motor speed and electromagnetic power spectrum in the low frequency band show continuous spikes. The method can be applied to the direct-driven wind turbine fault diagnosis system to identify the rotor mass imbalance and determine the size of the imbalance mass. This work is supported by National Science and Technology Support Program of China (No. 2015BAA06B02). |
| Key words: wind turbine PMSM mass imbalance fault modeling fault diagnosis |
